Archives

International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 3
First page : (643) Last page : (649)
Article doi: : http://dx.doi.org/10.18782/2320-6427

Structural Changes in the Ovary of Heteropneustes fossilis (Bloch) Exposed to Highest Magnesium Concentration during Various Stages of Reproductive Cycle

K. Singh*

Department of Zoology, Campus of Best Moral College, Bedia, Distt. Khargone [M.P.] India
*Corresponding Author E-mail: k.singhsagar@gmail.com
Received: 23.04.2018 | Revised: 29.05.2018   | Accepted: 7.06.2018  

 

 ABSTRACT

The fish Heteropneustes fossilis (Bloch) belonging to experimental group were gradually adapted from 10 m mol l-1, 20 m mol l-1, 35 m mol l-1, 55.0 m mol l-1 and 80 m mol l-1 (each step lasted for a day).  Exposed highest1 magnesium chloride (MgCl2.6H2O) solution the animal could not survive for more than 7 to 8 hours and is found lethal. Important cytological changes were observed during Various Stages in the ovary. Thick ovarian wall and ovigerous lamellae are ruptured in comparison to control group. But early chromatin nucleolus and late chromatin nucleolus stages are found highly basophilic than control during post-spawning period. During pre-spawning and spawning period, thinner ovarian wall with follicular epithelium which get separated from each other, are seen. The size of yolk granules has considerably increased in the oocyte. Shrinked nucleus with totally ruptured nuclear membrane were also observed during spawning than control group. Corpora atretica become also shrinked both during pre-spawning and spawning period.

Key words:Magnesium Chloride, Ovary, Reproductive Cycle, Heteropneustes fossilis (Bloch)

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Singh, K., Structural Changes in the Ovary of Heteropneustes fossilis (Bloch) Exposed to Highest Magnesium Concentration during Various Stages of Reproductive Cycle, Int. J. Pure App. Biosci.6(3): 643-649 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6427